Long live Qt 4.5!

1 files changed, 59 insertions, 0 deletions

diff --git a/doc/src/snippets/signalmapper/filereader.cpp b/doc/src/snippets/signalmapper/filereader.cpp
new file mode 100644
index 0000000000..8732dab349
--- /dev/null
+++ b/doc/src/snippets/signalmapper/filereader.cpp
@@ -0,0 +1,59 @@
+#include <QtGui>
+#include "filereader.h"
+
+
+FileReader::FileReader(QWidget *parent)
+    : QWidget(parent)
+{
+    textEdit = new QTextEdit;
+
+    taxFileButton = new QPushButton("Tax File");
+    accountFileButton = new QPushButton("Accounts File");
+    reportFileButton = new QPushButton("Report File");
+
+//! [0]
+    signalMapper = new QSignalMapper(this);
+    signalMapper->setMapping(taxFileButton, QString("taxfile.txt"));
+    signalMapper->setMapping(accountFileButton, QString("accountsfile.txt"));
+    signalMapper->setMapping(reportFileButton, QString("reportfile.txt"));
+
+    connect(taxFileButton, SIGNAL(clicked()),
+        signalMapper, SLOT (map()));
+    connect(accountFileButton, SIGNAL(clicked()),
+        signalMapper, SLOT (map()));
+    connect(reportFileButton, SIGNAL(clicked()),
+        signalMapper, SLOT (map()));
+//! [0]
+
+//! [1]
+    connect(signalMapper, SIGNAL(mapped(const QString &)),
+        this, SLOT(readFile(const QString &)));
+//! [1]
+
+    QHBoxLayout *buttonLayout = new QHBoxLayout;
+    buttonLayout->addWidget(taxFileButton);
+    buttonLayout->addWidget(accountFileButton);
+    buttonLayout->addWidget(reportFileButton);
+
+    QVBoxLayout *mainLayout = new QVBoxLayout;
+    mainLayout->addWidget(textEdit);
+    mainLayout->addLayout(buttonLayout);
+
+    setLayout(mainLayout);
+}
+
+void FileReader::readFile(const QString &filename)
+{
+    QFile file(filename);
+    
+    if (!file.open(QIODevice::ReadOnly)) {
+        QMessageBox::information(this, tr("Unable to open file"),
+            file.errorString());
+        return;
+    }
+
+
+    QTextStream in(&file);
+    textEdit->setPlainText(in.readAll());
+}
+